Earlier today I had a private lesson with an Italian student—intermediate level, who has been studying the present perfect vs. past simple tense. His teacher had given him an exercise where a list of ...

Which is preferable, simple past or present perfect, in situations like this one: I had a conversation with my friend and we planned to do something; shortly afterwards I call him back to announce the ...

Normally we use the past simple instead of present perfect when an action happened at a specific time in the past and is not linked with the present.
Why is the below sentence grammatically correct? ...